J/ApJS/234/37 R-band K2 photometry of main-belt asteroids (Molnar+, 2018)
Main-belt asteroids in the K2 Uranus field.
Molnar L., Pal A., Sarneczky K., Szabo R., Vinko J., Szabo G.M., Kiss C.,
Hanyecz O., Marton G., Kiss L.L.
<Astrophys. J. Suppl. Ser., 234, 37 (2018)>
=2018ApJS..234...37M 2018ApJS..234...37M
ADC_Keywords: Minor planets ; Photometry ; Optical
Keywords: minor planets, asteroids: general; techniques: photometric
Abstract:
We present the K2 light curves of a large sample of untargeted
main-belt asteroids (MBAs) detected with the Kepler Space Telescope.
The asteroids were observed within the Uranus superstamp, a relatively
large, continuous field with a low stellar background designed to
cover the planet Uranus and its moons during Campaign 8 of the K2
mission. The superstamp offered the possibility of obtaining precise,
uninterrupted light curves of a large number of MBAs and thus
determining unambiguous rotation rates for them. We obtained
photometry for 608 MBAs, and were able to determine or estimate
rotation rates for 90 targets, of which 86 had no known values before.
In an additional 16 targets we detected incomplete cycles and/or
eclipse-like events. We found the median rotation rate to be
significantly longer than that of the ground-based observations,
indicating that the latter are biased toward shorter rotation rates.
Our study highlights the need and benefits of further continuous
photometry of asteroids.
Description:
The Uranus superstamp was observed via the K2 Guest Observer proposals
GO8034 (PI: Jason F. Rowe) and GO8039 (PI: Andras Pal).
This superstamp contains roughly 105 pixels in a trapezoid shape
covering an area of 21'x21', plus the extensions corresponding to the
tracks of the moons Setebos and Sycorax (see Figure 1). The
observations lasted from 2016 January 04.55 until March 23.28 (BJD
2457392.1-470.0), without interruptions. Overall, 3814 cadences were
collected.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
asteroids.dat 10 608 List of asteroids analysed in this work;
table added by CDS
table1.dat 36 27354 Photometry of main-belt asteroids observed in
the Uranus superstamp during Campaign 8 of
the K2 mission
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See also:
I/284 : The USNO-B1.0 Catalog (Monet+ 2003)
J/A+A/498/313 : Photometry of 3 main belt asteroids (Marciniak+, 2009)
J/A+A/508/1503 : Photometry of 3 main belt asteroids (Marciniak+, 2009)
J/A+A/529/A107 : Photometry of 4 main belt asteroids (Marciniak+, 2011)
J/ApJ/741/68 : Main Belt asteroids with WISE/NEOWISE. I. (Masiero+, 2011)
J/ApJ/759/L8 : WISE/NEOWISE obs. of main belt asteroids (Masiero+, 2012)
J/A+A/545/A131 : Photometry of 8 main belt asteroids (Marciniak+, 2012)
J/PASP/124/1279 : Q3 Kepler's combined photometry (Christiansen+, 2012)
J/ApJ/770/7 : WISE/NEOWISE Main Belt asteroids (Masiero+, 2013)
J/ApJ/791/121 : NIR albedos of main-belt asteroids (Masiero+, 2014)
J/ApJS/210/1 : Asteroseismic study of solar-type stars (Chaplin+, 2014)
J/ApJS/219/27 : Surveys of asteroid rotation periods with iPTF (Chang+, 2015)
J/MNRAS/452/2127 : Fundamental param. of Kepler stars (Silva Aguirre+, 2015)
J/AJ/150/75 : Asteroid light curves from PTF survey (Waszczak+, 2015)
J/A+A/578/A42 : Main Belt asteroids observed by Spitzer (Ryan+, 2015)
J/AJ/152/70 : Outer Solar System Origins Survey. I. (Bannister+, 2016)
J/ApJS/224/12 : Kepler planetary candidates. VII. 48-month (Coughlin+, 2016)
J/AJ/151/117 : R photometry of (225088) 2007 OR10 (Pal+, 2016)
J/AJ/152/54 : Main-belt Ch/Cgh-type asteroids spectrosc. (Vernazza+, 2016)
J/A+A/596/A40 : Main-belt asteroids optical light curves (Szabo+, 2016)
J/A+A/607/A103 : Main-belt asteroids polarimetry. VI. (Gil-Hutton+, 2017)
J/AJ/153/149 : Broadband photometry of Neptune from K2 (Rowe+, 2017)
Byte-by-byte Description of file: asteroids.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- ID Number or provisional designation of the object
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- ID Number or provisional designation of the object
12- 23 F12.4 d BJD [2457392/2457470] Barycentric Julian Date
25- 30 F6.3 mag Rmag [16/24] Apparent USNO R band magnitude
32- 36 F5.3 mag e_Rmag [0.002/1] Uncertainty in Rmag
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 27-Mar-2018